Question about 1994 BMW 7 Series

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Unable to open car with flat battery

I have an 1994 E38 740IL BMW 7 Series Sedan with a flat battery, is there a way of opening this type of car to charge the battery or how can I open or charge battery from outside?

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  • brucegneill May 19, 2009

    the problem is that the battery is located under the rear seat, I have to open the car prior to accessing the battery. I cannot open the car with the keys because the battery being flat does not allow the opening of the doors, there must be a way of opening the doors utilising the keys or is there a solution of carging the battery from outside of the car

  • brucegneill May 19, 2009

    It is interesting the advise for this problem is I have to damgae the car, there must be someone out there that has had simalar problem
    apart from braking the glass in the door, I just find that is difficult no one has come accross this Promblem before, or else it is secret that BMW itself does not know how to solve this problem

  • brucegneill May 20, 2009

    Thank you for this Solution, I managed to open the car from passenger side door,
    with appreciation Thanks



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Yes many people have run into this problem. It is a somewhat complicated procedure. The trunk can be unlocked even when the battery is dead, so insert the key and turn it counter-clockwise and push. Once you have the trunk open locate the trunk light. (there are two of them I believe). Now you need a battery charger NO MORE than 10 AMPS. Connect the charger through the light socket (RED/WHITE is positive) charge for 10 MIN. no more than that. after you have done that (and be very careful about no more than 10 amps because there is a fuse and you do not want to blow it) Try unlocking the door with the key. If this does not work you can try the emergency unlock procedure. Hold the drivers side door handle open while turning the key to unlock the door, if the drivers side does not work, move to the passenger side and try that one. It will be hard to turn the key because you are manually unlocking the doors, keep pushing just don't break your key. Let me know if this helps you.

Posted on May 19, 2009

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You might run into code problem charging the battery as it is not designed to allow that. Consider replacing the battery.

If you also don't mind consult a battery expert around your location for better advise.

Posted on May 19, 2009

  • Onifade Adewunmi
    Onifade Adewunmi May 19, 2009

    You can only force the door open. But let an expert do this for you. It won't cost you much damage.

    Rate my solution.



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